Aseptic loosening of femoral components – Materials engineering and design considerations

► Aseptic loosening of femoral component is associated with the deficiencies in engineering design. ► The main leading causes of loosening are wear behavior, bioactivity and mechanical properties. ► Functionally graded biomaterials have the potential to reduce the occurrence of leading causes. Asept...

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Veröffentlicht in:Materials in engineering Jg. 44; S. 155 - 163
Hauptverfasser: Bahraminasab, Marjan, Sahari, B.B., Edwards, K.L., Farahmand, Farzam, Arumugam, Manohar
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Elsevier Ltd 01.02.2013
Schlagworte:
Biomaterials
Biomedical materials
Composites
Engineering design
Failure
Feasibility
Femoral components
Functionally graded materials
Knee prosthesis
Loosening
Materials engineering
Prosthetics
Selection for material properties
Surgical implants
Tasks
Engineering design
Selection for material properties
Composites
Functionally graded materials
Knee prosthesis
Biomaterials
ISSN:0261-3069
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Zusammenfassung:► Aseptic loosening of femoral component is associated with the deficiencies in engineering design. ► The main leading causes of loosening are wear behavior, bioactivity and mechanical properties. ► Functionally graded biomaterials have the potential to reduce the occurrence of leading causes. Aseptic loosening is one of the main reasons for the revision of a total knee replacement (TKR). The design of the key component of a TKR, the femoral component, is particularly problematic because its failure can be the result of different causes. This makes the development of new biomaterials for use in the femoral component a challenging task. This paper focuses on the engineering design aspects in order to understand the limitations of current materials and design deficiencies. The paper describes the introduction of a new biomaterial for a femoral component and justifies the recommendation to use multi-functional materials as a possible solution to aseptic loosening. The potential advantages of applying functionally graded biomaterials (FGBMs) in prosthetic femur are explained by reducing the leading causes of failure including wear, micro-motion and stress-shielding effect. The ideas presented in this paper can be used as the basis for further research on the feasibility and advantages of applying FGBM in other superior implant designs.
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ISSN:0261-3069
DOI:10.1016/j.matdes.2012.07.066